> I'm looking for a parser generator that generates output in PL/I.> That is, in the same way that there are variants of yacc that generate> Pascal or Perl or Java, I want "pl1yacc" (or pl1antlr or pl1eli or> .... you get the idea.)

> Anyone know of such a tool?

Have you looked at XPL?

The output is almost PL/I.

The XPL translator-writing system consists of a compiler, XPL, a
grammar analysis program that accepts a definition of the desired
language expressed in BNF, and other tools. The analyser produces the
required parse tables etc.

Details are contained in McKeeman, Horning, and Wortman,
"A Compiler Generator", published by Prentice-Hall in 1971.